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X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: =?us-ascii?Q?cuUK3r48hzLAL3CCPOqSA2P+dhpqxt6n9EQql+mud9QqSaAgz+CP4Chy3zLe?= =?us-ascii?Q?zjHsZjtUcH2+lskBpPyIw8HNm9yuWyl9F7R70JeCa/z32KxhRvwPUvf1c708?= =?us-ascii?Q?aZqnS/RTcEhEvzXLEx7oM8EF2lk0LFTd3bk8+YfVaN7JBKAmWjEMJMUGamIP?= =?us-ascii?Q?kbA88X5z8X9s10Xapvr0uBGZHmAQkG0yoPn/hHgMtjUVGAXxFmIcUkFamRZ/?= =?us-ascii?Q?wkjzFcnAHvgYxxck0mS4dgX89kVOZtriJM0CiRq4PjEb1jW9NNO991anq7lS?= =?us-ascii?Q?LDkGJ5WS6Oefcx/REzsflpti1N3Cn0gtSm4XAEx9yqDUUNsGoSnJCFFWTnqM?= =?us-ascii?Q?1EdM7r6+iqbBQuDxlm48YOV2vke/kMj1zb+Du+jrRoiOx+zsUyOitRpyX88r?= =?us-ascii?Q?8c0UbDWjUV5euZKeIiNZYREYeURNzoCaxTeSQbMcqiZypAq76jJju3OSNt7K?= =?us-ascii?Q?477Tx7ZnELL0N+NStuZEJy/rV08PCehakCGqDKlyftYoS2wL9gv9BrgsDoOn?= =?us-ascii?Q?H3jxdazo0Qj0EiaV7Cy9BrIAi/5musEdG2ND4s27mKBWZMFHxoxu87gv84iv?= =?us-ascii?Q?hEhDtKv/Bsf00uTei8TvTXJgl5KlbpVR4l3DFOz/p0l8CkRpsuWlCLK04lQz?= =?us-ascii?Q?j9Nr+SPyRQE1nHDAzyAHB14dQWCBeVHuiGsPfyBaaKqVnodYlbSlbFbG33Rg?= =?us-ascii?Q?ng2ig6kPBq6x4iTGyzLp5T3aN2AQJmyVR1IMZvaMAhaMMOnLoLvFsUW8Pe87?= =?us-ascii?Q?I0fWmeM7oG9s3lPAUEqVkjT6lh/KdWExRe5Zwa9RVegNZQGxikNz3mZPyNih?= =?us-ascii?Q?Fr/TWjK5rLP+gY6w4pVKXSSqcnodCQFQIYmaI1Em5dEv8dmdk/oSpeLne8g/?= =?us-ascii?Q?vrsBjNZ4TsIVJgcTjnOcqAgp3gcnRA+bVV6rv8jVmG4P5AwvM2skp8WCL6br?= =?us-ascii?Q?O/L81VVoU53miRZgSuD4BNQTFzoffYUCqUjcMSm/9xPBcygwPa/IwgKS0eFM?= =?us-ascii?Q?uIvzmTAcCnSXAxo3xb1LJm0QOUMRfT/T5fnWUrLa8SLn5Kh3i0NtZZEH4H5K?= =?us-ascii?Q?466qJDXLDAjjmwpCbiAMWUbLGzwi+fN4J/3dNu4dPd4kgL46ntXB2NZjT9VH?= =?us-ascii?Q?cJhsRvZUNheb/4VVcI8F2w1aIkXdx3ns26TdzP6L8rXgfnw/NuuqxG98e+aP?= =?us-ascii?Q?4js7zbHFmtTQ+tjT6TXP416ODZGEA2oewlYx4K7iNvSeFGk8qrJu3rmBhnkT?= =?us-ascii?Q?AJC+waT2ka6TNEaOPITt+/X+kGJKgMD6JwFVEPblk6giv98jjBnRGSupKZ9t?= =?us-ascii?Q?6xV2CpmBbvlQ36JH994MUJbim0JQtikpd1YCo5xQCTr//SG4XCF4Gq0Q4vLr?= =?us-ascii?Q?QtGO2RutMrio1JqHCuPQGxpf3CluaUUTDDhmaCQERUlEc3tK6ANNfKrwlhkC?= =?us-ascii?Q?drGNGZE4QdTyaPk30F9qr9fE3QWmXzvheYyaicEYwFwkTpGscbIhRSRPiXr+?= =?us-ascii?Q?D+RJlNYJBWqwn2kzgY6oqxDxtFQk2lFLxkatPjlcFrdGWwTL0URJ0cAGle9p?= =?us-ascii?Q?vSlNQ0lOE99EQyy6w6k=3D?= X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-Network-Message-Id: bf1a9d27-a886-4108-026e-08de1e608381 X-MS-Exchange-CrossTenant-AuthSource: SN1SPR01MB0019.namprd12.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 08 Nov 2025 00:48:20.6393 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: UgfwdPyjexhQ46O7FS9ZVdbCXK26DsByC58wmnwdxyI5X3nupxcHjDCNON8nwxp3 X-MS-Exchange-Transport-CrossTenantHeadersStamped: SJ0PR12MB6733 On Sat, Nov 08, 2025 at 12:28:04AM +0000, David Matlack wrote: > On 2025-10-23 03:22 PM, Jason Gunthorpe wrote: > > Replace the VT-d iommu_domain implementation of the VT-d second stage and > > first stage page tables with the iommupt VTDSS and x86_64 > > pagetables. x86_64 is shared with the AMD driver. > > > > VT-d has HW that requires an incoherent page table walker, the majority of > > the patches are adding generic support for the required cache flushing to > > iommupt. This is modeled after the existing ARM64 version and is intended > > to be re-used there. > > > > Applies on top of the AMD conversion: > > https://patch.msgid.link/r/0-v2-5c26bde5c22d+58b-iommu_pt_jgg@nvidia.com > > > > This is on github: https://github.com/jgunthorpe/linux/commits/iommu_pt_vtd > > I ran VFIO selftests against this series and did not detect any > regressions. > > Notably, vfio_dma_mapping_test confirmed that this series did not > regress VFIO's or IOMMUFD's ability to map 2MB and 1GB HugeTLB pages > as 2MB and 1GB entries in the I/O page tables as expected. And > vfio_pci_driver_test validates that a device (Intel DSA in this case) > can do DMA, and exercises I/O faulting handling. > > Tested-by: David Matlack Thanks David! Jason